Public bug reported:
no touchpad is detected even with the command
cat /proc/bus/input/devices
this is the output of this command:
I: Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input0
U: Uniq=
H: Handlers=event0
B: PROP=0
B: EV=21
B: SW=1
I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=PNP0C0C/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input1
U: Uniq=
H: Handlers=kbd event1
B: PROP=0
B: EV=3
B: KEY=10000000000000 0
I: Bus=0011 Vendor=0001 Product=0001 Version=ab83
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input2
U: Uniq=
H: Handlers=sysrq kbd event2 leds
B: PROP=0
B: EV=120013
B: KEY=402000000 3803078f800d001 feffffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7
I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Ideapad extra buttons"
P: Phys=ideapad/input0
S: Sysfs=/devices/pci0000:00/0000:00:1f.0/PNP0C09:00/VPC2004:00/input/input3
U: Uniq=
H: Handlers=rfkill kbd event3
B: PROP=0
B: EV=13
B: KEY=81000800100c03 4400000000300000 0 2
B: MSC=10
I: Bus=0003 Vendor=174f Product=2459 Version=0007
N: Name="Integrated Camera: Integrated C"
P: Phys=usb-0000:00:14.0-5/button
S: Sysfs=/devices/pci0000:00/0000:00:14.0/usb3/3-5/3-5:1.0/input/input4
U: Uniq=
H: Handlers=kbd event4
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0
I: Bus=0003 Vendor=0461 Product=4e23 Version=0111
N: Name="PixArt HP USB Optical Mouse"
P: Phys=usb-0000:00:14.0-4/input0
S:
Sysfs=/devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4:1.0/0003:0461:4E23.0001/input/input5
U: Uniq=
H: Handlers=mouse0 event5
B: PROP=0
B: EV=17
B: KEY=70000 0 0 0 0
B: REL=903
B: MSC=10
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-5.4.0-81-generic 5.4.0-81.91~18.04.1
ProcVersionSignature: Ubuntu 5.4.0-81.91~18.04.1-generic 5.4.128
Uname: Linux 5.4.0-81-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.16
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 3 15:27:19 2021
InstallationDate: Installed on 2021-09-02 (0 days ago)
InstallationMedia: Ubuntu 18.04.5 LTS "Bionic Beaver" - Release amd64
(20200806.1)
SourcePackage: linux-signed-hwe-5.4
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed-hwe-5.4 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
** Attachment added: "Screenshot from 2021-09-03 15-33-11.png"
https://bugs.launchpad.net/bugs/1942596/+attachment/5522735/+files/Screenshot%20from%202021-09-03%2015-33-11.png
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https://bugs.launchpad.net/bugs/1942596
Title:
Touchpad is not detected on ubuntu 18.04.
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